Thomas alsop



T.ALSOP. SPRING FOR MILL SPINDLES.

' No. 81,456. Patented Aug. 2.5, 1868.

@ niirh air'nzt fire Letters Patent 81,456, dated August 25, 1868. v

IMPROVEMENT IN THE MODE 0F ATTAGHING SPRINGS T0 MILL-SPINDLES.

the seam mutt]: in m that items gamut mu muting gm .Uf fig: time.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, THOMAS ALSOP, of the town of Elkhart City, in the county of Logan, and State of Illinois, have invented a new and useful Improvement on Springs for Mill-Spindles; and I do hereby declare that the following is a full, clear, and exact description of the constructionand. operation of the same, reference, i

being had to the annexed drawings, making a part of this specification, in which Figure 1 is a side view, and

Figure 2 is a vertical view. 7

The object of my invention is to prevent the jar or backlash so generally found in mill-gearing.

A represents the mill-spindle, having its hearings in the step B and the lower millstone C. D is the pinion, by which motion is communicated to, the spindle A. E is a metallic case, fastened to the pinion by the bolts 6 b b, and having an opening, or other suitable device, to which the outer coil of the spring at is attached. e is a sleeve, fitting upon the spindle, sufiiciently-loose to be easily raised and lowered, and prevented from turning upon the spindle by the bolt z', or other suitable device, and attached to the spring in by the catch it. The pinion D is supported by the hubf, which is fastened upon the spindle by a set-screw, n. V I

It will be seen that, whenthe'pinion D is moved in the direction indicated by the arrow, it will communicate motion to the spindle A through the spring'm, the elasticity of which will equalize its motion, and the pinion 1) may at any time be easily disconnected from its driving-wheel, by raising it with the spring at and the sleeve e upon the spindle. l p

I do not claim the use of a spring for equalizing the motion, as I am aware that springs of variouskinds have been in usefor that purpose.

I claim the combination of case -E, pinion D, shaft A, and spring m, with its outer end attached to the case E, and the inner end attached to the spindle by the sleeve e, arranged substantially as described, and for the purpose specified.

THOMAS ALSOP.

v Witnesses Tnos. JEWELL, WM. J. Donovan. 

